# Cosmochemistry

> Cosmochemistry investigates the chemical composition of the solar system, using meteorites, lunar samples, cometary dust, and interplanetary missions as natural archives of planetary formation 4.6 billion years ago. Isotopic analysis of presolar grains found in chondritic meteorites reveals nucleosynthetic signatures from ancient stellar explosions that pre-date our Sun. Returned samples from the Hayabusa2 and OSIRIS-REx missions to carbonaceous asteroids are providing uncontaminated primordial organic material unavailable from Earth-based collections. Cosmochemistry informs planetary science, stellar physics, and the origins of the volatile elements—including water and organic molecules—that made life on Earth possible.

*Source: [https://selltoscientists.com/fields/cosmochemistry/](https://selltoscientists.com/fields/cosmochemistry/)*

**Researcher count:** 3,800
**Average funding:** $640K

## Subfields

- Meteorite Analysis
- Solar Wind Composition
- Planetary Formation
- Presolar Grains
- Cometary Chemistry

## Key technologies

- SIMS Ion Microprobe
- Isotope Ratio Mass Spectrometry
- Neutron Activation Analysis
- Transmission Electron Microscopy
- Sample Return Missions

## Top institutions

- Washington University St. Louis
- University of Chicago
- Arizona State University
- JAXA Institute of Space and Astronautical Science
- Natural History Museum London

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